With TNT in the mix, FedEx may explode to upside, just as it has done in the past five years, delivering gains of 130%.

NEW YORK (TheStreet) -- Since hitting its 2015 low of $164.51 on March 27, shares of global transportation giant FedEx (FDX) have delivered more than 11% gains to its shareholders, culminating in a 52-week high of $183.03 on June 5. And if you're thinking about taking some profits now, you're likely to regret it in the months and quarters ahead.

The Memphis-based shipping specialist, which competes with UPS (UPS), reports fourth-quarter and full-year results Wednesday before the opening bell. FedEx appears eager to convinced an already jittery market that it can grow both revenue and profits despite a global economic slowdown, which has hampered its Express shipping business -- it's largest segment.

With the help of its recent $4.8 billion acquisition of Dutch shipping competitor TNT Express (TNTEY), FedEx looks poised to grow its global package-delivery position -- particularly in Europe.

TheStreet's Jim Cramer, portfolio manager of the Action Alerts PLUS Charitable Trust Portfolio says, "FedEx gets that Europe's coming back strong because the CEO, Fred Smith, is an economist and one of the greats."

This is assuming the TNT deal passes regulatory approval. UPS went after TNT two years ago, offering some $7 billion. But UPS couldn't seal the deal, which fell apart due to antitrust concerns. In that vein, just from a competitive and -- perhaps minor -- psychological position against its bitter rival UPS, TNT can become an explosive asset for FedEX. That is, of course, if the deal gets done.